Thread cleaner bracket



May'24, 1938. H. SARFERT ET AL THREAD CLEANER BRACKET Filed May 11, 1937Patented May 24, 1938 PATENT OFFIQE THREAD CLEANER BRACKET HarrySarfert, Philadelphia, and Arthur A.

Arnold, Pottstowmla.

Application May 11, 1937, Serial No. 142,066

1 Claim.

The present invention relates to an improved bracket for mounting athread cleaner and associated parts.

In the mounting of thread cleaners as heretofore practiced in the artlittle, if any, attention has been given to the operative relation ofthe cleaner to the bobbin and other associated parts so that devices forsuch purpose now in use require a number of thread guides which aregenerally'spaced so far apart or so far from. the cleaner that it iseasy to lay the thread around the cleaner rather than through it.Furthermore such prior devices are more or less limited in use to a.specific type of cleaner plates and are only suited to that particulartype.

Some of the objects of the present invention are to provide an: improvedthread cleaner bracket and associated parts; to provide a thread cleanersupporting bracket wherein provision is made for quickly and accuratelyleading the thread to the spool or bobbin; to provide a thread cleanersupporting bracket wherein but one thread guide or rest is required; toprovide a bracket construction wherein the thread cleaner parts are solocated as to make it practically impossible for the operator to passthe thread around the cleaner instead of through it; to provide a novelthread rest so arranged and constructed that it can be repositioned atwill to remove a Worn or roughened surface thereon; and to provide otherimprovements as will hereinafter appear.

In the accompanying drawing Fig. 1 represents a perspective of a threadcleaner bracket embodying one form of the present invention; Fig. 2represents a front elevation of the same; Fig. 3 represents a rearelevation showing the bracket mounted for use; Fig. 4 represents a planof the bracket with the cleaner plates removed; Fig. 5 represents asection on line 55 or Fig. 2; and Fig. 6 represents an elevation in partsection of a portion of a winding machine showing the device of thepresent invention in operative position.

Referring to the drawing one form of the present invention comprises abracket It for supporting the cleaner plates I I in operative positionbetween the swift i2 which carries the thread to be cleaned and thebobbin I3 which winds the cleaned thread. In the present descriptionreference is made to but a single unit of the machine comprising oneswift I2, one set of cleaner plates II, and one bobbin I3, though itwill be understood in actual practice that a plurality of swifts I2 aremounted for independent rotation, a plurality of cleaner plate sets arefixed to the reciprocable traverse bar I4, and a plurality of bobbins l3are carried by the individual spindles i5 and caused to rotate by anywell known mechanism.

he cleaner plates H are in the form of two flat metal strips providedwith cleaning edges I6 arranged in opposed relation and spaced apart therequired thousandths of an inch to provide the thread receiving slot IT.The spacing can be provided by the use of shims, welding of the baseends, by making the base part of one plate wider than. the base part ofthe other plate, or by any other means, since the spacing of the platesforms no part or the present invention. As usual the free or outer endsof the plates II are respectively cut at an angle to form in assembledcondition a V-notch to guide the thread in to cleaner slot I1.

For supporting the plates II in operative position the bracket I B isrecessed to receive a retaining block I8 having a groove 20 in one sidethereof of the proper dimensions to snugly seat the plates I! inedgewise relation. This block I8 is preferably made fast by screws 2iwhich enter the side wall of the bracket II] against which the baseportion of the plates II are in contact. A modified form of thisconstruction contemplates casting the block I8 as an integral part ofthe bracket it and machining the groove 20. A set screw 22 enters theend of the block I8 to engage the outer edge of one of the plates II,thereby clamping the two plates in operative position.

For supporting the thread on its way to the cleaner slot II, the bracketII] is provided with two lugs 23 arranged in upstanding relation. tosupport a thread rest 24 in parallel and close proximity to the side ofthe plates I I which faces the front of the machine. This rest 24 ispreferably of porcelain and is in the form of a relatively shortcylindrical rod, one end of which seats in a socket 25 in one of thelugs 23, while the other end enters a hole 26 through the other lug 23.This hole 25 is threaded to receive a locking screw 2'! which fixes therest 24 in a selected position. The lugs 23 serve as stops to preventdisplacement of the thread at the ends of the rest 24, while should therest 24 become worn or: roughened along its line contact with thethread. the screw 2'! can be loosened and the rest 2t turned to aposition with a new line of contact with the thread 29.

In order to mount the bracket II) on the traverse bar 5 i, a notch 28 isgrooved longitudinally of the bottom of the bracket Ill and is of therequired angular shape to conform to the usual contour of the top of thetraverse bar [4. Thus one face of the notch is longer than the other andin this instance is so located that when the bracket is mounted on thebar M the cleaner plates II will be at the rear of the bar while therest 24 will be at the front. In this connection it should be noted thatthe horizontal plane of the rest 24 is slightly below the horizontalplane passing through the top of the cleaning slot l1 and since thisslot entrance is well above the level of the bobbin, the thread is drawnangularly downward with no opportunity of becoming displaced. A groove30 extends longitudinally of the upper face of the bracket and serves toreceive the spring pressed ends of the usual retaining clips 3| whichare fastened to the traverse bar H at proper locations.

It will now be apparent that a complete unitary bracket has been devisedwherein the parts are reduced to a minimum and the arrangement is suchthat the thread is effectively delivered to the bobbin. Also it shouldbe noted that the cleaner parts and the rest are directly associated ina predetermined manner such that the travel of the thread from one tothe other is in a relatively short path and leaves the cleaner in adownwardly direction toward the bobbin whereby the thread is held withcertainty in the cleaner slot. An

important advantage of the present construction is that the relation ofthe parts makes it practically impossible for the operator to lead thethread directly to the bobbin, instead of through the cleaner slot, thusensuring all of the thread being subjected to a cleaning action.

While only a single form is shown in which this invention may beembodied, it is to be understood that the invention is not limited toany specific construction, but might be applied to various forms withoutdeparting from the spirit of the invention or the scope of the appendedclaim.

Having thus described our invention, we claim:-

A device of the character described comprising a thread cleaner bracketincluding a base adapted to seat on a traverse bar, said base beingrecessed at one side, a notched bar seated in said recess and formingwith the base a groove in the top thereof, upstanding cleaner platesseated in said groove and extending above the base, means for lockingthe plates in the groove, integral arms extending upwardly from the basefrom the side opposite the bar, and a guide rest supported by said armsand extending therebetween over which a thread is guided to said plates.

HARRY SARFERT. ARTHUR A. ARNOLD.

